On 02/12/2013 11:59 AM, Rainer Gerhards wrote:

V5: quite a bit, very noticable on a high end system
V7: none at all
In (recent) v7 there is a script optimizer. It detects when an expression is a 
simple property-based filter and recompiles it into exactly the same thing.

In the master branch, the optimizer even detects things like checks for 
syslog-priority-text and compiles these down into selector-based filters. While 
I am still working on it, the optimizer now covers a lot of cases where 
previously manual work was required.

Thank you so much for the response Rainer! Perfect answer.

(I had no idea you were doing so much optimization in v7. Awesome!)
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